Cistern-clamp fastener



d lowing is a specification, referencebei ng had spring are made. to operate in conjunction light pressure, andavoid the necessity of drivspective view of a hoop removed from the cistern with my improved fastener thereon, and

UN D STATES PATENT OFFIcE,

WILLIAM ADDISON BIGGS, JR.,'OF-'NEW ORLEANS, LOUISIANA;

Cl-STERN- CLAMP FASTEN'ER;

\ SPECIFICATION forming part or Letters Patent No. 38i,282.dated Apri1 17,1888.

' Application filed Octoberti,188'l. Serial No. 2511603. mt modelJ .To all whom it may concern: I 1 I Be it known that I, WILLIAM ADDISON RIGGS, J r., a citizen 'oftheyUnited States of America, residing at New; Orleans, in the parish of Orleans and State of Louisiana, have invented certain new and useful Improvements in a Oistern-Olamp Fastener, of which the foltherein to the accompanying drawings.

My invention relates to improvements in a cistern-clamp fastener, in which a bolt" and withv a hoop; and the objects of my improve mentsare to provide a device for ho p of .a cistern that'will yield when under a heavy or ing the hoops. Iattain these objects by the mechanism illustrated in the accompanying drawings, in whichi Figure l is a side elevation of a cistern with my improvements applied. Fig. 2 is a per- Fig. 3 is a plan view of the hoop and its fastener. I

Similar letters refer to similar parts throughout the several views. w

A is a hoop of the cistern. B is a clamp formed on the ends of the hoop. O is a bolt. D are the heads or nuts on the bolt. E are the springs on the bolt. O s In constructing my device I use an ordinary pared,the ends of same are made in the shape of a clamp or flangewith an opening of sufficient size to admit the bolt O,which is passed through the same, the springs E being placed 0 f in position and beingheld secure by the heads D. s I prefer adjusting the hoops A as shown in Fig. 1, from the fact that'the'contentsiof cisterns are more or less changed by a-reduction in volume at this particular locality, and the 4 5L shrinkage or expansion is greaterthan at. the

lower portion of the cistern. To obviate this expansion or contraction the spring E expands or contracts when pressure is placed upon the hoop. 1 I

. I am aware that clamps have been used -on cistern-hoops with bolts on the same, but I do not claim such an inventionybut What-I do claim, and desire to secure by-Letters Patent of the United States, is-'- z 5 The combination of the hoop A,having per- .forated flanges'B, a bolt,-O, having heads D,

and springs E, substantially as set forth.

In testimony whereof I aflix mysignature in presence of two witnesses. 7 1

WILLIAM ADDISON RIGGS, JR. Witnesses: I V

GEORGEJ. YENEWINE, MICHAEL KIERNAN.

metal bolt, either with threads on one orboth 1 

